Andrew t



(No Model.) 2

\ A. T. MOATS.

' MINERS GRIP; 0R BRACKET FOR SUPPORTING GOAL DRILLING MAGHINES.

No. 412,522. Patented 001;. 8, 1889.

. N. PETERS. PhdloLilhographlh Wlsbingian. II. C.

' UNITED STATEs I PATENT: OFFICE.

ANDREW T. .MOATS, OF PLEASANTVILLE, IOWA, ASSIGNOR TO THE BLACK DIAMOND MINING TOOL COMPANY, OF SAME PLACE.

MINERS GRIP OR-BRACKET FOR SUPPORTlNG COAL-DRILLING MACHINES.

SPECIFICATION forming part of Letters Patent No. 412,522, dated October 8, 1889. Application filed June 24, 1889. $eria1 No. 315,303. (No model.)

To all whom it may concern: v

Be it known that I, ANDREW T. MOATS, a citizen of the United States, residing at Pleasantville, in the county of Marion and State of Iowa, have invented avMiners Grip- Bracket for Supporting a Drill, of which the following is a specification.

My object is to provide a device that can be readily fastened to the wall in a drift and braced to project horizontally in such amanner that it will support a drill, and also readily detached and folded to facilitate moving it from one point in the mine to another. I

My invention consists in the construction and combination of a straight bar having a hook at one end and an eye at the other, a screw, and an internally-screw-threaded tube, and a drill-rest, as hereinafter set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which- Figure'l shows the device in position in a mine as required for practical use. Fig. 2 shows it folded, as required, to facilitate handling and eoonomizing space in packing, storing, and shipping. Fig. 3 is a perspective I view of the hook on one end of the bracket,

and Fi i is an edge viewof the the other end.

A is a straight bar of T-iron. B is an integral hook on one end of the bar projecting downward at right angles. The opposite end has the flange on its under side and center removed or flattened. A perforation formed in the end admits a drillrest 0 to be detachably connected by means of a screw-bolt, so that it can be rotated to direct a drill placed thereon at angle desired. p

D is a screw hinged to the flange of the bar A, that extends into an internally-screwdrill-rest on threaded tube H. The free end of the tube is pointed and adapted to penetrate the wall of a drift, as shown in Fig. 1.

J is a handle extended through a transverse bore in the tube in such a manner that the handle can slide longitudinally to facilitate rotating the tube therewith.

In place of hinging the screw to the bar A, the tube may be hinged thereto and the screw placed therein and provided with a handle for rotating it.

To fasten and brace the complete device in a drift, I make an opening in the wall adapted to admit the hook B, as shown in Fig. 1, and then place the pointed end of the tube against the wall and rotate the tube by means of the handle. The brace composed of the tube and screw is thus lengthened and the bar A pressed upward, as required, to clamp the hook fast. If the form of the opening in which the hook is inserted require a wedge to be placed on top of the hook, the wedge can be readily applied, as shown in Fig. 1, so that there will be resistance to the upward movement of the bar A sufficient to force the lower end of the brace into the wall to firmly fasten and brace the complete device as required to support and operate a drill thereon.

To detach the device, rotate the tube in a reverse way to relax the pressure of the brace and then withdraw the hook from the holein the wall.

I am aware adjustable braces have been combined with drill-supports adapted to be fastened to a wall; but my manner of constructing and combining an extensible brace with a straight bar and drill support so that it can be folded flat upon the bar when not in use to facilitate handling and shipping, and readily adjusted to brace and support the bar in a horizontal. position, and also to aid in clam ping the bar fast to a wall, is novel and greatly advantageous, in that the brace can be readily lengthened and shortened, and its pointed free end inserted in the same perpendicular face of the wall in which the hook on the end of the bar is inserted, to rigidly fasten the bar and support it at any point of elevation. and at any angle desired by simply rotating the sleeve H after the bar and brace are connected with the perpen dicular wall, as illustrated in Fig. 1.

Iclaim as my invention- An improved miners adjustable bracket and drill-support comprising a straight bar tating the sleeve on the hinged bar, in the having a hook at one end adapted to be manner set forth,for the purposes stated.

fixed in a perpendicular Wall, and a swiveled drill-support at the other end, a screw- ANDREW T. MOATS. 5 threaded bar hinged to the straight bar near the drill-support, a screw-threaded sleeve fitted to the hinged bar, and means for ro- Witnesses:

W. S. JOHNSTON, ISAAC FISHER. 

